Add the plumbing to enable DRP

android_webview/native/aw_contents_statics.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/native/aw_contents_statics.h"
 
+#include "android_webview/browser/aw_browser_context.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback.h"
+#include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/AwContentsStatics_jni.h"
 #include "net/cert/cert_database.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ScopedJavaGlobalRef;
 using content::BrowserThread;
+using data_reduction_proxy::DataReductionProxySettings;
 
 namespace android_webview {
 
 namespace {
 
 void ClientCertificatesCleared(ScopedJavaGlobalRef<jobject>* callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   JNIEnv* env = AttachCurrentThread();
   Java_AwContentsStatics_clientCertificatesCleared(env, callback->obj());
 }
@@ skipping 10 matching lines @@
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   ScopedJavaGlobalRef<jobject>* j_callback = new ScopedJavaGlobalRef<jobject>();
   j_callback->Reset(env, callback);
   BrowserThread::PostTaskAndReply(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&NotifyClientCertificatesChanged),
       base::Bind(&ClientCertificatesCleared, base::Owned(j_callback)));
 }
 
+// static
+void SetDataReductionProxyEnabled(JNIEnv* env, jclass, jboolean enabled) {
+  AwBrowserContext* context = AwBrowserContext::GetDefault();
+  if (context == NULL) return;

[boliu, 2014/05/06 23:38:04]

return on new line (don't need brackets) here and below

c++ vs java styles lalala

+  DataReductionProxySettings* proxy_settings =
+      context->GetDataReductionProxySettings();
+  if (proxy_settings == NULL) return;
+  proxy_settings->SetDataReductionProxyEnabled(enabled);
+}
+
 bool RegisterAwContentsStatics(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview